公开(公告)号：CA2598626C

公开(公告)日：2013-10-15

申请号：CA2598626

申请日：2006-08-31

Applicant: TECH RESOURCES PTY LTD

Inventor： VAN KANN FRANK JOACHIM ,  WINTERFLOOD JOHN

IPC: G01V7/16

Abstract: A gravity gradiometer is disclosed which has a sensor in the form of bars (41 and 42) which are supported on a mounting (5) which has a first mount section (10) and a second mount section (20). A first flexure web (33) pivotally couples the first and second mount sections about first axis. The second mount has first part (25), a second part (26) and a third part (27). The parts (25 and 26) are connected by second flexure web (37) and the parts (26 and 27) are connected by third flexure web (35). The bars (41 and 42) are located in housings (45 and 47) and form a monolithic structure with the housings (45 and 47) respectively. The housings (45 and 47) are connected to opposite sides of the second mount section 20. The bars (41 and 42) are connected to their respective housings by flexure webs (59).

公开(公告)号：AU2007251890B2

公开(公告)日：2013-07-04

申请号：AU2007251890

申请日：2007-08-14

Applicant: TECH RESOURCES PTY LTD

Inventor： VAN KANN FRANK JOACHIM

IPC: G01V7/16

Abstract: Abstract The present invention provides a method of tuning properties of a gravity gradiometer for measuring 5 components of the gravity gradient tensor. The gravity gradiometer comprises a pair of first and second transversely arranged sensor masses that are arranged for movement about an axis and relative to each other in response to a gravity gradient. The gravity gradiometer 10 further comprises first and second capacitors for sensing and influencing the movement of the first and second sensor masses. The method comprising applying a bias voltage to at least one of the capacitors for generating an electrostatic force which acts on one of the sensor 15 masses and thereby influences the movement of that sensor mass.

公开(公告)号：AU2007249125B2

公开(公告)日：2013-07-04

申请号：AU2007249125

申请日：2007-08-14

Applicant: TECH RESOURCES PTY LTD

Inventor： VAN KANN FRANK JOACHIM ,  WINTERFLOOD JOHN

IPC: G01V7/00

Abstract: Abstract The present invention provides a gravity gradiometer for 5 measuring components of the gravity gradient tensor. The gravity gradiometer comprises a housing and a gimballed support structure with at least one actuator. The gravity gradiometer further comprises at least one sensor mass arranged for movement in response to a gravity gradient. 10 The gravity gradiometer also comprises a transducer that is arranged so that the movement of the at least one sensor mass relative to a portion of the transducer generates a transducer signal. Further, the gravity gradiometer comprises an electrical feedback loop arranged 15 to direct an electrical signal to the actuator of the external support structure. The gravity gradiometer is arranged so that an influence of an external angular acceleration on the rotation of the housing is reduced by the actuator when the transducer generates a transducer 20 signal effected by the external angular acceleration on the gravity gradiometer.

公开(公告)号：ZA201009279B

公开(公告)日：2012-03-28

申请号：ZA201009279

申请日：2010-12-23

Applicant: TECH RESOURCES PTY LTD

Inventor： VAN KANN FRANK JOACHIM

IPC: G01V20060101

Abstract: The present disclosure provides a gravity gradiometer which comprises a component comprising a detector for generating a signal in response to a change in gravity gradient experienced by the gravity gradiometer. The gravity gradiometer also comprises a support structure for supporting the component in a manner such that the component is movable relative to the support structure. Further, the gravity gradiometer comprises an acceleration sensor for sensing an acceleration associated with an external acceleration when the gravity gradiometer is exposed to the external acceleration. In addition, the gravity gradiometer comprises an actuator for generating a force on the component as a function of both an acceleration sensed by the acceleration sensor and a response parameter associated with the component. The actuator is arranged to apply a generated force such that transmission of the acceleration from the support structure to the component is reduced.

公开(公告)号：CO6351828A2

公开(公告)日：2011-12-20

申请号：CO10165095

申请日：2010-12-30

Applicant: TECH RESOURCES PTY LTD

Inventor： VAN KANN FRANK JOACHIM

IPC: G01V7/16

Abstract: La presente descripción proporciona un gradiómetro de gravedad que comprende un detector para detectar un gradiente de gravedad. El detector comprende al menos un elemento de percepción móvil y que se dispone para generar una señal en respuesta a un cambio en el gradiente de gravedad. El gradiómetro de gravedad también comprende una estructura de soporte para soportar el detector en una aeronave y un componente que se dispone para reducir la transmisión de una aceleración de aeronave al detector. Al menos un elemento de percepción móvil y la estructura de soporte, juntos, se disponen para reducir una influencia de la aceleración de aeronave en la señal por un factor de al menos 107 cuando el gradiómetro de gravedad es aerotransportado y expuesto a la aceleración de aeronave.

公开(公告)号：BRPI0702880A2

公开(公告)日：2011-03-22

申请号：BRPI0702880

申请日：2007-08-17

Applicant: TECH RESOURCES PTY LTD

Inventor： VAN KANN FRANK JOACHIM ,  WINTERFLOOD JOHN

IPC: G01V7/00 ,  G01V7/10

Abstract: A gravity gradiometer is disclosed which comprises a pair of sensor masses arranged in housings. Transducers are provided for measuring movement of the sensor masses in response to the gravity gradient tensor. The masses are supported for movement by a flexure web between the mass and a support and a stop comprises a pair of abutment services defined by a cut prevent movement of the sensor masses beyond the elastic limit of the flexure web.

公开(公告)号：BRPI0702879A2

公开(公告)日：2011-03-15

申请号：BRPI0702879

申请日：2007-08-17

Applicant: TECH RESOURCES PTY LTD

Inventor： VAN KANN FRANK JOACHIM ,  WINTERFLOOD JOHN

IPC: G01V7/16

公开(公告)号：NZ560700A

公开(公告)日：2011-02-25

申请号：NZ56070006

申请日：2006-08-31

Applicant: TECH RESOURCES PTY LTD

Inventor： VAN KANN FRANK JOACHIM ,  WINTERFLOOD JOHN

IPC: G01V7/16

Abstract: Disclosed is a gravity gradiometer for measuring components of a gravitational gradient tensor. The gradiometer comprises: a first housing (45); a first mass (41) forming one part of a pair of masses; and a first flexure web (59) located on a peripheral edge of the first mass. The flexure web pivotally connects the first mass with the first housing for movement there between in response to differences in a gravitational field so that signals can be produced indicative of components of the gravitational gradient tensor. The first mass has a non-zero quadruple moment with a centre of mass located at the flexure web and the first mass is chevron-shaped with first and second arms extending from the centre of mass.

公开(公告)号：AR062667A1

公开(公告)日：2008-11-26

申请号：ARP070103924

申请日：2007-09-06

Applicant: TECH RESOURCES PTY LTD

Inventor： VAN KANN FRANK JOACHIM ,  WINTERFLOOD JOHN

IPC: G01V7/00

Abstract: Se da a conocer un interruptor térmico al igual que un gradiometro provisto de un interruptor térmico. Dicho interruptor está formado por un material no magnético, como ser un material semiconductor. El material semiconductor puede proporcionarse en la forma de un dispositivo con efecto Hall. Se dispone los interruptores térmicos en el gradiometro en una placa de circuito impreso 856. La placa 850 tiene regletas conductoras 856 conectadas a las regletas conductoras de un sensor 71 por los puentes 852. El interruptor térmico está conectado en el lado opuesto de la placa de circuito impreso 850 con las regletas 856 y la circuitería de procesamiento 859. Se dispone de un sustrato de cobre 865 en el mismo lado de la placa de circuito impreso que el interruptor térmico 57, para llevar el calor fuera del interruptor térmico 570 cuando se cierra el interruptor térmico.

公开(公告)号：PE20080968A1

公开(公告)日：2008-07-10

申请号：PE2007001306

申请日：2007-09-27

Applicant: TECH RESOURCES PTY LTD

Inventor： VAN KANN FRANK JOACHIM

IPC: G01V7/00 ,  G01V7/16

Abstract: QUE COMPRENDE: a) AL MENOS UNA MASA SENSORA QUE SE MUEVE EN RESPUESTA AL GRADIENTE GRAVITACIONAL; b) UN ACOPLAMIENTO EN PIVOTE PARA PERMITIR EL MOVIMIENTO DE (a) ALREDEDOR DE UN EJE; Y, c) UNO O MAS CAPACITORES DE CARGA CONSTANTE DISPUESTOS DE MODO QUE EL MOVIMIENTO DE (a) GENERE UN CAMBIO EN UNA TENSION A TRAVES DE (c). CADA (c) INCLUYE PRIMEROS Y SEGUNDOS ELEMENTOS DEL CAPACITOR, DONDE LOS PRIMEROS ESTAN ACOPLADOS CON (a) Y LOS SEGUNDOS SON MANTENIDOS EN POSICIONES EN RELACION A LAS CUALES SE MUEVE LA (a) UTILIZADA PARA DEFINIR UN ESPACIO ENTRE LOS RESPECTIVOS PRIMEROS Y SEGUNDOS ELEMENTOS. CADA (c) FORMA PARTE DE UN SISTEMA DE CAPACITORES QUE INCLUYE AL MENOS UN RESISTOR DE BLOQUEO QUE IMPIDE EL FLUJO DE CARGAS A TRAVES DEL SISTEMA, Y VARIAS FUENTES DE TENSION ASOCIADAS CON LOS RESPECTIVOS CAPACITORES. DICHO SISTEMA ESTA DISPUESTO DE MODO QUE UN CAMBIO EN LA TENSION APLICADA A LOS CAPACITORES MODIFICA UNA FUERZA ELECTROSTATICA QUE SE OPONE O FACILITA EL MOVIMIENTO DE (a)